<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="/">数据统计</a></el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 2. 为 ECharts 准备一个定义了宽高的 DOM -->
            <div id="main" style="width: 750px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
// 1.导入echarts
import * as echarts from "echarts"
import _ from "lodash"
export default {
    data() {
        return {
            // 需要合并的数据
            options: {
                title: {
                    text: "用户来源"
                },
                tooltip: {
                    trigger: "axis",
                    axisPointer: {
                        type: "cross",
                        label: {
                            backgroundColor: "#E9EEF3"
                        }
                    }
                },
                grid: {
                    left: "3%",
                    right: "4%",
                    bottom: "3%",
                    containLabel: true
                },
                xAxis: [
                    {
                        boundaryGap: false
                    }
                ],
                yAxis: [
                    {
                        type: "value"
                    }
                ]
            }
        }
    },
    created() {},
    // 此时，页面上的元素，已经被渲染完毕
    async mounted() {
        // 3. 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById("main"))

        const { data: res } = await this.$http.get("reports/type/1")
        console.log(res)
        if (res.meta.status !== 200) {
            return this.$message.error("获取报表失败")
        }

        // 4. 准备数据和配置项
        const result = _.merge(res.data, this.options)

        // 5. 展示数据
        myChart.setOption(result)
    },
    methods: {}
}
</script>

<style lang="less" scoped>
</style>